The Zoo Med Betta Bling Skull Sign is a unique and stylish aquarium decoration designed to enhance the appearance of your betta fish's home. Measuring approximately 3 inches in diameter, this skull-shaped sign features a sleek design that adds an edgy touch to any freshwater tank setup. It comes with a suction cup for easy attachment to the glass, ensuring it stays firmly in place and does not harm your betta or other aquarium inhabitants.